Edit docstrings for `tile` and `repeat`, fix "usm_narray" typos

[ndgrigorian]

This PR changes docstrings for tile and repeat to better describe behaviors of these functions, and fixes minor typos throughout dpctl where "usm_narray" was used instead of "usm_ndarray"

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[github-actions[bot]]

Deleted rendered PR docs from intelpython.github.com/dpctl, latest should be updated shortly. :crossed_fingers:

[github-actions[bot]]

Array API standard conformance tests for dpctl=0.17.0dev0=py310h15de555_189 ran successfully. Passed: 839 Failed: 0 Skipped: 92

[github-actions[bot]]

Array API standard conformance tests for dpctl=0.17.0dev0=py310h15de555_190 ran successfully. Passed: 839 Failed: 0 Skipped: 92